focus点拨focus 作动词，表示“集中(注意力) ”，常与介词 on 搭配。例句赏读It is best to focus on your future and leave this sad thing in the past.如果能集中注意力对待未来、把这件伤心的事留在过去就最好了。He forced himself to focus his thoughts on work.他强迫自己把思绪集中在工作上。即学即练 补全句子，每空一词。那项研究把注意力集中在如何提高产量。The study _ _ _ _ _ promote production.3. crash点拨crash 表示“坠毁；撞毁” ，可以作及物动词、不及物动词、名词。例句赏读His teenage son crashed the family car last night.昨晚他十多岁的儿子把他家的车撞坏了。The plane crashed soon after it took off.飞机起飞后不久就坠毁了。Many people died in the train crash.很多人在那次火车撞毁事件中丧生。即学即练 补全句子，每空一词。那架飞机坠入了河里。The plane _ _ the river.
